In the first installment of this series, we introduced the concept of “quantum computing” and how, while still experimental, its implications for blockchain security include the potential exposure of public keys, the theft of funds—and thus the transformation of cryptocurrencies as we know them. That article focused on the SHA-256 algorithm’s contribution to Bitcoin security primarily via its consensus mechanism, but SHA-256 is only one side of the coin so to speak. In this second part, we will examine the Elliptic Curve Digital Signature Algorithm (ECDSA). A signature algorithm deeply embedded within the Bitcoin protocol, ECDSA adds a layer of authentication by linking a public key with its corresponding private…
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Could Quantum Computing Mean the Death of Crypto?
Interest is growing in cryptography resilient to quantum attacks
Contained in the bizarre world of quantum mechanics—where physical matter has properties of both particles and waves, and subatomic particles exist in multiple states at one time until observed—may lie the key to unparalleled computational speed. While still highly experimental, governments have been investing in research into “quantum computing” for years, and a recent article in Wired notes that last year venture capitalists “plowed a record $1.8 billion into companies working on quantum computing hardware or software worldwide…nearly five times the amount invested in 2019.” Whereas the basic unit of information in traditional digital electronics is the bit (a logical state with two possible values, typically expressed as 0 and…
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Exploring the future of blockchain tech through its history
CoinDesk’s head of research discusses crypto-economics, cryptography, and some blockchain use cases
While Bitcoin is only ten years old, the origins of the technologies behind it go back much further, and its future implications are still not clear.
